They might have offered longer term for less money annually. Or maybe, he just didn't like the overall money and wanted a shorter deal, so he could become a free agent sooner. Anyway, it's harder to project contracts for foreign players because there is not much data and too much uncertainty. How often does a 26-year old slugging corner infielder who strikes out too much try to come to the US? He might be the only one who fits that exact profile.